Find the components of d2 and d4 using trig.
Then sum all E-W components (paying attention to direction). Then sum N-S components. Then use Pythagoean to get resultant.
Determine the resultant displacement rising analytical method
d1 = 400 km, E
d2 = 200 km, 20 degrees W of S
d3 = 280 km, N
d4 = 350 km, 70 degrees E of S
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